Reversible bolt lock



May 22, 1923.

W. N. SAUERBREI REVERSIBLE BQLT LOCK Filed March A TTOR/VEYS' PatentedMay 22, 1923s UNHTED STATES @FFE WILLIAM NICHOLS SAUERBREI, WILSONBOI-IANNAN, INCL, OF YORK.

REVERSIBLE BOLT LOCK.

Application filed March 3, 1921.

To all whom it may concern Be it known that I, WILLIAM N. SAUER- nnnr, acitizen of the United States, and a resident of the city of New York.Richmond Hill, borough of Queens, in the county of Queens and State ofNew York, have invented a new and Improved Reversible Bolt Look, ofwhich the following is a full, clear, and exact description.

The invention relates to looks such as shown and described in theLetters Patent of the United States, No. 1,272,967 granted July 16,1918, to Anthony Kirsch.

The object of the invention is to provide a new and improved reversiblebolt lock or latch arranged to permit of conveniently reversing the boltto allow the use of the lock on doors swinging either inward oroutward.-

Another object is to permit of conveniently reversing the bolt withoutdisassembling the lock.

With these and other objects in view, the invention consists of certainnovel features of construction as hereinafter shown and described andthen specifically pointed out in the claims. 7

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, in whichsimilan characters of reference indicate corresponding parts in all theviews.

Figure 1 is a reduced plan view of the improved reversible bolt look asapplied to a door swinging inward the door, door casing and keeper beingshown in section;

Figure 2 is a similar view of the same with the improved reversible boltlock applied to a door swinging outward;

Figure 3 is a rear sectional view of the improved reversible bolt lock;

Figure 4 is a cross sectional. view of the same;

Figure 5 is a perspective view of the reversible bolt lock with the boltpartly reversed;

Figure 6 is a perspectivev view of the yoke;

Figure 7 is a perspective view of the bolt; and

Figure 8 is a perspective view of the lever for locking the bolt to theyoke.

The lock in its general construction, as shown in Figures 1 and 2,consists of a key controlled cylinder section 10 and a latch Serial No.449,277.

bolt section 11 having a latch bolt 12 adapted to engage a keeper 13 ora keeper 14, the keepers being mounted on door jambs 15 and 16 adjacentthe doors 1? and 18 on which the lock is shown applied in F igures 1 and2. The cylinder section 10 is attached to the outer face of the corresponding door 17 or 18 while the latch bolt section 11 is attached tothe inner face of the door 17 or 18.

In the casing 20 of the latch bolt section 11 is mounted to slide a yoke21 controlled by rollbacks 22 adapted to be actuated either by the keyinserted in the cylinder section 10 or by the knob 23 mounted on thecasing 20. The forward end of the yoke 21 is provided with a bearing 25in which is mounted to turn and to slide the shank 26 of the bolt 12which latter is provided with the usual head 27 having a beveled facefor engagement with the corresponding keeper 13 or 14. A spring 30 ismounted in the casing 20 and bears against a lug 31 forming part of thebearing 25 to hold the latter and consequently the bolt 12 normally in ashot-out position. The bearing 25 is provided with a cut-out portion 32into which projects the rear end of the bolt shank 26, and this rear endof the bolt shank 26 is provided with a collar 33 normally engaged by anarm 34 formed on a lever 35 fulcrumed on a stud 36 attached to thebearing 25 of the yoke 21. A spring 40 is held on the stud 36 and bearswith one end on a lug 41 forming part of the bearing 25, and the otherend of the said spring 40 engages a handle 42 formed on the lever 35.This lever 42 projects into an L-shaped slot 43 formed in the backplate44 of the lock casing 20, as plainly shown in Figure 5. The square baseof the bolt head 27 fits into a correspondingly shaped opening 45 formedin the front end of the casing 20 to hold the bolt against accidentalturning.

When the several parts are in the normal position illustrated in Figures3 and 4 then the lever 35 by its arm 34 engaging the collar 33 locks thebolt to the bearing 25 of the ,yoke 21 and hence when a sliding movementis given to the yoke 21 then the bolt 12'inoves with the said yokeeither into retracted or shot-out position. When the bolt head 2? is in.the position shown in Figure 1 then vit readily engages the keeper 13 onclosing the door 17 mounted to swing inward. Now when it is desired touse the lock on a door 18 that swings outward then the bolt 12 isreversed prior to fastening the lock in position on the door 18, andinorder. to reverse the bolt it is necessary for the operator to take holdof the handle 42 and push the same downward from the longitudinalportion of the slot 18 into the angular portion thereof, as indicated inFigure 5. On moving the handle 42 as described, a downward swingingmovement is given to the lever 35 whereby the arm 34 moves out ofengagement with the collar 33 and the operator now by taking hold of thebolt head 27 can pull the bolt outward to disengage the base of the bolthead 27 from the opening 45 in the front end of the easing 20. Theoperator can now turn the bolt into the' reverse position shown inFigure 2 and when this has been done the operator pushes the bolt 12inward to re-engage the base of the bolt head 27 with the opening 45.The operator next releases the handle 42 to allow the spring 40 toreturn the, lever 35 to' its normal position, that is, to re -engage thearm 3a with the collar 33 to cause the bolt to again move with the yoke21.

From the foregoing it will be seen that by the arrangement described thebolt can be readily reversed to allow the use of the lock'on doorsswinging either inward or outward. It will also be noticed that the bolt12 can be reversed without disassemblingthe lock.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. In a look, a casing having a polygonal bolt head opening, a bolthaving a shank of circular cross sectional contour and a beveled headslidingly engaging the said bolt head opening, a yoke provided with ahearing at the forward end thereof, said bearing being formed to providean opening extending through its walls adjacent to the rear end thereof,said bolt having its shank arranged to slide and rotate in the bearingand to extend into the opening at the rear endof the'bearing, a collarsecured on said bolt shank and received within the said opening of thebearing, whereby the axial movements of the bolt are limited, and aspring pressed lever fulcrumed on the said yoke and having an armengaging the said collar to normally hold the said bolt against forwardmovement in the bearing and against movement relatively to the yoke,said lever having a handle extending through a slot in the casingandbeing operalfie exter iorly ofthe casing to release the be t.

2. In a look, a casing having a bolt head opening and a slot formedthrough a face thereof, a yoke slidably disposed in said casing, saidyoke being provided with a bearing, a bolt having a head mounted toslide in the bolt head opening, and a shank mounted to turn and slide inthe bearing, a collar secured on the shank of said bolt, and

spring-pressed means normally engaging the collar and the yoke toreleasably hold the bolt against movement relatively to the yoke, saidspring-pressed means including an element extending through the slot inthe face of the casing and being operable exteriorly of the casing tomove said spring-pressed means out of engagement with said collar.

3. In a look, a casing having a bolt head opening and a slot formedthrough-a face thereof, a yoke slidably disposed in said casing, saidyoke being provided with a bearing, a slide in the bolt head opening, ashank mounted to'turn and slide in the bearing, a collar secured on theshank of said bolt, and a spring-pressed lever fulcrumed on said yokeand having an arm engaging thesaid collar to normally hold the said boltagainst forward movement in the bearing and against movement relativelyto the yoke, said lever having a handle extending through the slot inthe casing and being operable ext'eriorly of the casing to release thecollar.

a. In a look, a casing having a bolt head opening and having a slotformed through a face thereof, said slot having the major" portionthereof extending longitudinally! of the casing and having a downwardlyturned portion at the'forward end thereof, a yoke slidably disposedwithin the casing and being provided with a bearing, said bearing havingan opening formed through its walls adjacent to the rear end thereof, abolt having ashank mounted to turn and slide in the bearing and having ahead adapted to slide in the bolt head opening,a collar secured on saidbolt and received within the opening of the bearing, whereby the axial.inovements ofthe bolt are limited, and a spring-pressed lever fulcrumedon said yoke and having an arm engaging the said collar to normally holdsaid bolt against/forward movement in the bearing and against movementrelatively to the yoke, said lever having a handle extending through theslot in the face of the casin g and being norm ally disposed in thelongitudinal portion of the slot, said handle being movable along thelongitudinal portion of the slot and'into the downwardly turned portionthereof to move and releasably hold the arm of the lever outofengagement with the collar.

5. In a'lock, a' casing having a polygonal bolt head opening, abolthaving a'shank of circular cross sectional contour and a beveled headslidingly engaging the bhl t head opening, a yoke provided with ahearing at the forward end thereof and having a lug extending radiallyof the bearing, said bearing being formed to provid an opening extendingthrough its walls adjacent to the rear end thereof, said bolt having itsshank arranged to slide and rotate in the bearing and to extend throughthe opening at the rear end of the bearing, a collar secured on saidbolt shank and received within said opening of the bearing, wherebyaxial movements of the bolt are limited a lever fulcrumed on the yokeand having an arm adapted to engage the said collar to hold the 15 saidbolt against forward movement in the bearing and against movementrelatively to the yoke and having a handle extending through a slot inthe casing, and a spring member supported intermediately upon the yokeand having one end bearing against the lug on the bearing and its otherend bearing against the handle of the lever, whereby the arm of thelever is normally held in engagement with said collar, said handle beingoperable exteriorly of the casing to move the arm of the lever out ofengagement with the collar and out of engagement with the bolt.

WILLIAM NICHOLS SAUERBREI.

